Short-distance space-time structure and black holes in string theory: A short review of the present status
In this paper the authors express their opinion that one of the most important tasks now is to seek for the definite guiding principles which explain the emergence of Yang-Mills theory and on the bases of which we can proceed towards a more satisfactory formulation and definition of the theory. They review some of the attempts along this line of thoughts from two specific viewpoints, namely, the space-time uncertainty relation as a possible universal characterization of the short-distance space-time structure in string theory, and the possibility of a microscopic theory of black holes from the viewpoint of the D-brane matrix model. A generalized space-time uncertainty relation suitable for M theory is proposed.
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